How do I fix error code E FF on a LG refrigerators?

1. undefined: Step 1: Reset the unit and enter Test Mode 1 (push test button 1 time). 2. undefined: Step 2: Open the freezer door and check for airflow. If windy, proceed to Step 4. 3. undefined: Step 3: If no airflow, manually rotate the freezer fan blade with your hand. If it feels sticky or seized, replace the fan motor. 4. undefined: Step 4: Measure fan motor power voltage at CON7 pins 12–14. Expected: 12V. If voltage is not 12V, replace the Main PCB. 5. undefined: Step 5: Measure fan control signal voltage at CON7 pins 16–14. Expected: 0V to 5V (PWM). If not in this range, replace the Main PCB. 6. undefined: Step 6: Measure fan feedback voltage at CON7 pins 10–14. Expected: 0V to 5V. If voltage is not in this range, replace the fan motor. 7. undefined: Step 7: If all voltages are correct and airflow is present, explain to customer.

LG Refrigerators

Error Code E FF

Freezer Fan (BLDC) Error — feedback signal not received from freezer fan motor within 65 seconds

Moderate

Address soon - your appliance may not work properly

Also displayed as: E FF

How to Fix

1
Step 1: Reset the unit and enter Test Mode 1 (push test button 1 time).
2
Step 2: Open the freezer door and check for airflow. If windy, proceed to Step 4.
3
Step 3: If no airflow, manually rotate the freezer fan blade with your hand. If it feels sticky or seized, replace the fan motor.
4
Step 4: Measure fan motor power voltage at CON7 pins 12–14. Expected: 12V. If voltage is not 12V, replace the Main PCB.
5
Step 5: Measure fan control signal voltage at CON7 pins 16–14. Expected: 0V to 5V (PWM). If not in this range, replace the Main PCB.
6
Step 6: Measure fan feedback voltage at CON7 pins 10–14. Expected: 0V to 5V. If voltage is not in this range, replace the fan motor.
7
Step 7: If all voltages are correct and airflow is present, explain to customer.

This Error Applies To

LG LRFCS29D6S Series Refrigerators

Service manual exact match: LRFCS29D6S

Related Error Codes

E IS

Icing Sensor Error — short or disconnection of icing sensor (ice maker sensor). Note: E IS displayed without user input is the error of the Icing Sensor.

E Rt

Room Temperature Sensor Error — short or disconnection of room temperature sensor

E rS

Refrigerator Sensor Error — short or disconnection of Refrigerator Sensor

E FS

Freezer Sensor Error — short or disconnection of Freezer Sensor

F dS

Defrost Sensor Error — short or disconnection of Defrost Sensor

E CO

Communication Error — communication failure between Main PCB MICOM and Display PCB MICOM

F dH

Defrost Heater Error — defrost heater or defrost control circuit failure

E CF

Condenser Fan (BLDC) Error — feedback signal not received from condenser fan motor within 65 seconds

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